buspirate

func (*BusPirate) PowerOff ¶

func (bp *BusPirate) PowerOff()

PowerOff turns off the 5v and 3v3 regulators.

func (*BusPirate) PowerOn ¶

func (bp *BusPirate) PowerOn()

PowerOn turns on the 5v and 3v3 regulators.

func (*BusPirate) SetPWM ¶

func (bp *BusPirate) SetPWM(duty float64)

SetPWM enables PWM output on the AUX pin with the specified duty cycle. duty is clamped between [0, 1].

bp, err := buspirate.Open("/dev/ttyACM0")
if err != nil {
	panic(err)
}
duty := 0.1
delta := 0.1
for {
	bp.SetPWM(duty)
	time.Sleep(50 * time.Millisecond)
	duty += delta
	if duty > 1.0 {
		duty = 1.0
		delta = -delta
	}
	if duty < 0 {
		duty = 0.0
		delta = -delta
	}
}

Output:

func (*BusPirate) SpiConfigure ¶

func (bp *BusPirate) SpiConfigure(power, pullups, aux, cs bool) error

0100wxyz – Configure peripherals, w=power, x=pullups, y=AUX, z=CS

func (*BusPirate) SpiConfigure2 ¶

func (bp *BusPirate) SpiConfigure2(output33v, idle, edge, sample bool) error

1000wxyz – SPI config, w=output type, x=idle, y=clock edge, z=sample

func (*BusPirate) SpiCs ¶

func (bp *BusPirate) SpiCs(high bool) error

00000010 – CS low (0) 00000011 – CS high (1)

func (*BusPirate) SpiEnter ¶

func (bp *BusPirate) SpiEnter() error

func (*BusPirate) SpiLeave ¶

func (bp *BusPirate) SpiLeave() error

func (*BusPirate) SpiSpeed ¶

func (bp *BusPirate) SpiSpeed(speed SpiSpeed) error

01100xxx – Set SPI speed, 30, 125, 250khz; 1, 2, 2.6, 4, 8MHz 000=30kHz, 001=125kHz, 010=250kHz, 011=1MHz, 100=2MHz, 101=2.6MHz, 110=4MHz, 111=8MHz

func (*BusPirate) SpiTransfer ¶

func (bp *BusPirate) SpiTransfer(send []byte) (*[]byte, error)

0001xxxx – Bulk SPI transfer, send 1-16 bytes (0=1byte!)